I have use the system settings, install updates and I downloaded all the files and installed it. Then sound suddenly stopped functioning. When I open the sound setting, it says in the output tab
and there is no hardware in playback.
My laptop is Toshiba Satellite L310.
sound is working just fine when I first installed ubuntu 12.04
Now I can't watch movies or listen to music. I am new to ubuntu 12.04
please help me